274 results about "Wire tension" patented technology

The invention discloses a plug-in inductor winding process control method based on production parameter dynamic compensation, and provides a closed-loop compensation control strategy taking a physical field evolution model as a core aiming at the problems of unstable sensing quantity and non-uniform structure in the traditional process. The method comprises the following steps: firstly, constructing an ideal physical field reference model according to target inductance parameters and a structure, and describing an evolution law of characteristics such as a magnetic field, an electric field or impedance in an ideal state; in the actual winding process, a physical field signal is collected through a sensor, production parameters such as wire tension and main shaft rotating speed are obtained, and a physical field distribution snapshot of the current winding state is generated. And the system compares the extracted actual features with the reference model, identifies a dominant disturbance source causing deviation in combination with real-time production parameters, and outputs a disturbance type label carrying causal information. And according to a label and a production parameter change trend, a compensation instruction is dynamically generated and executed, fine adjustment of tension, a winding displacement track or density is realized, and consistency and precision of an inductor finished product are ensured.

The invention provides a spring steel wire tension detection device capable of being quickly disassembled and assembled, which belongs to the technical field of steel wire detection and comprises a tensile machine, a buffer mechanism, a fixing mechanism, a locking mechanism and a triggering mechanism. The tensile machine comprises two clamps, and each clamp comprises a buffer mechanism arranged on the tensile machine and used for providing buffer force for a spring steel wire; the fixing mechanism is connected with the buffering mechanism, and the fixing mechanism is matched with the buffering mechanism to clamp and fix the spring steel wire; the locking mechanism is arranged on the buffering mechanism, and the fixing mechanism is limited and locked by the locking mechanism; and the triggering mechanism is arranged on the buffering mechanism, and the buffering mechanism triggers the triggering mechanism to move so as to relieve limiting of the locking mechanism to the fixing mechanism. According to the device, limiting can be automatically relieved after the spring steel wire is broken, an operator does not need to manually conduct complex unlocking operation, the spring steel wire can be rapidly pulled away, rapid dismounting of the spring steel wire is achieved, and the working efficiency is remarkably improved.

The invention discloses an intelligent control system for wire tension of a wire drawing machine and a control method thereof, and relates to the technical field of industrial automation. During operation of the system, a data preprocessing module, a multi-parameter analysis module, a fault prediction and early warning module and an intelligent control and optimization module are integrated; the method comprises the following steps: acquiring and analyzing running state information and environmental data of a wire drawing machine in real time, establishing a tension dynamic model, a thermodynamic tension distribution model and a dynamic humidity influence model of the wire drawing machine, and obtaining a fault prediction index value PF (t) of the wire drawing machine; the wire drawing machine is regulated and controlled according to the preliminary assessment risk value SF (t) and the secondary fault risk value SF2 (t) obtained through assessment, the running state information of the regulated wire drawing machine is fed back, potential equipment faults are predicted, running parameters are automatically adjusted to ensure continuous and stable running of equipment, the wire tension can be accurately monitored and regulated, and the production efficiency is improved. And equipment faults caused by tension fluctuation are reduced.

The invention discloses a control system and method for a steel wire traction type overhead rail inspection robot with a sliding contact line, and relates to the technical field of modern industry and infrastructure construction.The system comprises a steel wire traction control module and traction devices connected with the two ends of a rail through steel wires, the traction devices are provided with servo motors, and the servo motors are used for driving traction wheels to rotate; the movement control of the inspection robot along the track is realized; the sliding contact line power supply control module comprises a sliding contact line laid along the track and a power taking device carried by the inspection robot, and the sliding contact line is matched with the power taking device and used for providing continuous and stable power supply control for the inspection robot; the steel wire traction control module is further integrated with a steel wire tension real-time monitoring control unit, and the steel wire tension real-time monitoring control unit is electrically connected with the servo motor and used for dynamically adjusting the output power of the servo motor according to the tension data of the steel wire, so that the tension of the steel wire is kept within the preset optimal range. According to the invention, intelligent control of the inspection robot can be realized.

The invention relates to the technical field of motor stator coil winding machine control, in particular to a micro motor stator coil winding machine and a control method thereof.The control method specifically comprises the steps that the transmission lag value of an enameled wire indirect tension value is determined according to the synchronous fluctuation condition between a tension actual measurement sequence and indirect tension sequences under different moving step lengths; lagging correction is carried out on the indirect tension value, the tension period correlation strength in the running stage of the stator coil winding machine is considered, and the interference distortion degree is evaluated; according to the change trend of the paying-off linear speed and the difference between the tension measured value and the set value, the winding looseness of the enameled wire is obtained; obtaining a weight through the two indexes, carrying out weighted fusion on a measured value and a predicted value to obtain a tension correction value, and carrying out motor stator coil winding machine enameled wire tension control by combining a PID control algorithm; the tension control precision of the motor stator coil winding machine is improved, the tension control effect of the coil winding machine is enhanced, and the tension fluctuation ratio of enameled wires is reduced.

The invention relates to the technical field of wires and cables, in particular to a low-cost and high-conductivity conductor, processing equipment and a processing technology. The processing equipment comprises a supporting disc, a bearing supporting plate, a limiting support, a wire storage wheel, a damper, a bearing supporting pipe, a bearing support, a bearing ring, a wire arranging supporting pipe, a bearing disc, a wire arranging ring, a wire stranding die, a tension detection mechanism used for detecting the tension of a sub-wire and a correction unit used for correcting the tension of the sub-wire. The detection mechanism comprises a plurality of detection output ends annularly arranged on the bearing disc, the correction unit comprises a transmission mechanism and a brake mechanism which are arranged on each bearing supporting plate, each brake mechanism is provided with a speed reduction output end, and the detection output ends are connected with the speed reduction output ends through the transmission mechanisms; the wire storage wheel is used for storing the sub-wires shaped by the wire drawing die. The equipment can automatically correct the loose sub-wires, and ensures the normal operation of a cable stranding process.

The invention relates to the technical field of material mechanical property testing, and discloses a composite steel wire tension test method which comprises the following steps: executing a micro-unloading and reloading action at each increment end point of stepping loading, and synchronously calculating to obtain instantaneous system rigidity Ki, dissipated energy Wd and system rigidity change rate K based on force displacement data of the action, according to the method, through a set of built-in judgment rules, firstly, the K value is used for filtering measurement artifacts generated by slippage of the clamp, then the damage inflection point is identified according to irreversible decline of the Ki value, and the physical property of the damage is discriminated in combination with two-dimensional state data of Ki and Wd, so that the traditional one-way destructive test is changed into the traditional one-way destructive test. The method is converted into a staged failure analysis process capable of performing online diagnosis, and provides a direct physical observation window for distinguishing functional damage and structural damage of the material, so that the depth and credibility of information acquisition of the tension test are improved.

The invention relates to the technical field of power transmission line icing disaster monitoring, in particular to a power transmission line deicing jump tripping risk early warning method, system and device and a storage medium. The visual monitoring device captures the motion trail of the ground wire in real time and calculates the spatial distance, meanwhile, a three-dimensional power simulation model of the power transmission line is constructed to simulate and calculate the jumping process of the wire after deicing, and the distance data obtained through the two means are fused to form the minimum insulation distance; on the basis of wire tension changes and ice coating thickness abrupt changes collected by the ice coating monitoring terminal and wire displacement characteristics captured by the visual monitoring equipment, the occurrence of a deicing jump event is judged through multi-source data cross validation; and when it is judged that the ice-shedding jump event occurs, the discharge voltage is calculated according to the minimum insulation distance in combination with the standard discharge characteristic curve, the discharge voltage is compared with the line operation voltage to obtain a voltage margin, tripping risk grading evaluation is performed based on the voltage margin, and corresponding early warning information is output. The problem that a dynamic process cannot be captured by traditional static monitoring is solved.

According to the composite continuum mechanical arm control method and system and the mechanical arm, friction loss is considered, the drive wire node tension transmission relation is analyzed, drive wire tension distribution is obtained, and then deformation drive of a flexible beam is equivalent; statics analysis is carried out on the notch continuum mechanical arm, a static model is established by using an Euler-Bernoulli beam theory, and the static model is solved by using a Taylor series expansion method; based on static model data, a Kepler elliptic equation is used for fitting the tail end track of the notch continuum mechanical arm, and a relation equation of the concentric tube continuum mechanical arm relative to the tail end coordinates is constructed; and according to matrix coordinate conversion, an equation of key parameters needed for solving the control parameters is established and iteratively solved, and a control parameter equation set is established to solve the control parameters of the composite continuum mechanical arm. The control response timeliness can be improved, and the control accuracy and precision can be improved.

The invention discloses a winding device with a tension adjusting function for transformer production, and relates to the technical field of transformer production, the winding device comprises a pay-off rack, a positioning seat and a power seat, the pay-off rack is provided with a plurality of fixed shafts, and the fixed shafts are arranged on the positioning seat; compared with an existing winding device for transformer production, dynamic adjustment of wire tension is achieved, winding precision is greatly improved, friction force can be adjusted in real time according to the wire pay-off speed through cooperation of the brake disc at the end of the fixed shaft on the pay-off frame and the brake, it is ensured that the tension degree of the wire is stable in the winding process, and the winding efficiency is improved. The winding machine is further provided with a positioning mechanism, the positioning mechanism has an eccentricity correction function, in the winding process, if the axis of the transformer framework deviates, fine adjustment force can be applied to the end of the transformer framework through a correction assembly, so that eccentricity is automatically compensated, and the winding accuracy is improved. And the axis of the transformer framework and the axis of the ejector rod coincide again.

The utility model relates to the technical field of diamond beaded wire saws, in particular to a diamond beaded wire saw rope tension automatic adjusting device which comprises an n-shaped mounting seat, first adjusting mechanisms are symmetrically arranged at the positions, close to the left side and the right side, of the top of the n-shaped mounting seat, each first adjusting mechanism comprises an air cylinder, and the end of a piston rod of each air cylinder is connected with an n-shaped moving frame. An auxiliary wheel is rotatably connected to the rear side surface of the inner wall of the n-shaped moving frame through a bearing, a mounting plate is fixedly welded to the end, away from the driving wheel, of the n-shaped moving frame, a graduated scale is fixedly connected to the top of the mounting plate through a bolt, and the top end of the graduated scale penetrates through the top of the n-shaped mounting base and is slidably connected with the n-shaped mounting base; and the first scale grooves are uniformly arranged at equal intervals. According to the automatic rope tensioning force adjusting device for the diamond beaded rope saw, by arranging the first adjusting mechanism and the second adjusting mechanism, the device can conveniently adjust the rope tensioning force of the diamond beaded rope.

The utility model belongs to the technical field of tension beam structures, and particularly relates to a three-way pre-tightening steel wire tension beam structure. A three-way pre-tightening steel wire tension beam structure comprises a cross beam, a steel wire and a pre-tightening assembly, the pre-tightening assembly is installed on the cross beam, a steel wire groove is formed in the cross beam, and the steel wire is installed in the steel wire groove through the pre-tightening assembly; the utility model provides a three-way pre-tightening steel wire tension beam structure, and aims to solve the problem of balance between the bearing capacity and the self weight of a cross beam in a tension beam structure in the prior art.

The invention relates to the technical field of thread tension adjusting control, in particular to a thread tension self-adaptive adjusting method of a flat sewing machine. Current and historical line tension time sequence data are obtained, and data support is provided for adjustment. By comparing the difference between the current tension and the historical preset tension, a tension deviation index is determined, and abnormal fluctuation is found preliminarily. Thirdly, comparing the numerical difference of the tension time sequence data of each line and the change along with time, determining a tension characteristic value, and reflecting the tension change condition; and integrating the current deviation index and the deviation of all the tension characteristic values to obtain a current tension adjustment degree value so as to realize comprehensive evaluation. In order to achieve more accurate adjustment, the current adjustment value is adjusted based on the deviation index and the adjustment degree value of the historical monitoring period to obtain a new value, so that the adjustment is more continuous and stable. Finally, according to the new adjustment value, the current preset tension and the historical preset tension, the self-adaptive tension value of the next period is determined, dynamic and self-adaptive adjustment is achieved, and the accuracy is improved.

There may be provided a cable management system for an electric vehicle charger. The cable management system may include a mechanical wire coupled to a charging cable associated with the electric vehicle charger and an enclosure. The cable management system may include a wire tension sensor engaging the mechanical wire. The wire tension sensor may generate a sensor output based on a force applied to the mechanical wire. The wire retractor may be configured to retract the mechanical wire into the enclosure and extend the mechanical wire from the enclosure. The cable management system may include a controller coupled to the wire tension sensor. The controller may be configured with instructions which, when executed, cause the controller to control the wire retractor based on an amount of force applied to the mechanical wire.

This invention discloses a winding device for transformer production with tension adjustment function, relating to the field of transformer production technology. The winding device includes a wire feeding frame, a positioning seat, and a power seat. The wire feeding frame is equipped with several fixed shafts. Compared with current transformer production winding devices, this invention achieves dynamic adjustment of wire tension, significantly improving winding accuracy. Through the cooperation of the brake disc and brake at the end of the fixed shaft on the wire feeding frame, the friction force can be adjusted in real time according to the wire feeding speed, ensuring stable wire tension during winding and effectively avoiding problems such as loose coils, excessive tightness, or coil stacking. This invention also includes a positioning mechanism with an eccentricity correction function. During the winding process, if the transformer skeleton axis deviates, the correction component can apply a fine-tuning force to the end of the transformer skeleton to automatically compensate for the eccentricity, making the transformer skeleton axis coincide with the top rod axis again.

The present disclosure relates to relates to a assistive wearable system for relieving muscle fatigue in the neck and shoulders, the assistive wearable system includes a head gear mounted to cover a head of a user, a wearable platform mounted on an upper body of the user, and a wire tension controller that maintains tension of a wire by being seated on the wearable platform and fixing to operate a semi-active ratchet mechanism structure as a brake to detect a moment a movement of the wire stops as connected to the head gear by the wire, and stop unwinding of the wire, wherein the ratchet mechanism rotates the ratchet based on the unwinding and pulling of the wire.

The invention belongs to the technical field of wire harness preparation, and provides a preparation method of a flexible integral wire harness, which comprises the following steps: monitoring the outer diameter of a wire, identifying an unattached wire, judging whether a birdcage phenomenon occurs or not, if so, detecting the tension of the wire, identifying a wire with insufficient tension, and if not, detecting the tension of the wire; and carrying out coincidence comparison, section comparison and comparison of wire tension and wire outer diameter in a section with unattached wires, judging whether the birdcage phenomenon is caused by insufficient tension of the wires, if so, carrying out insufficient tension section comparative analysis on the wires with insufficient tension, identifying birdcage initiating wires in the wires with insufficient tension, and if not, identifying the birdcage initiating wires in the wires with insufficient tension. And according to the birdcage, initiating a wire to determine a twisting simulation tension range, carrying out twisting simulation under different tensions, determining a mapping relation model of insufficient tension and birdcage abnormal probability, determining a tension early warning value, and in the twisting process, when the wire tension reaches the tension early warning value, carrying out wire tension regulation and control to ensure the process quality stability.

The utility model relates to the technical field of blooming rivet nuts, and discloses a waterproof wire tension tester with a protection structure, which comprises a processing table and a fixed seat, connecting seats are fixed on two sides of the front end and the rear end of the processing table, and the tail end of a first bolt is connected to the inside of a connecting hole. The connecting seats are fixed at the front end and the rear end of the machining table, the connecting seats can also be fixed at the two sides of the machining table, then the shielding protection plates are arranged at the front position and the rear position of the machining table, and the transparent glass plate is fixed in the middle of the shielding protection plates. A first bolt is adopted to pass through a mounting hole and a connecting hole to complete locking and fixing of the shielding protection plate and the connecting seat, so that the shielding protection plate can shield the front and back positions of the machining table and can shield the two side positions in the same way, and after the material is broken, the follow-up swinging phenomenon of the material can be shielded by the shielding protection plate; therefore, the overall protection capability is well improved in the working process.

The utility model discloses a high-strength steel wire stress corrosion test device which comprises a tensioning base, an anchoring base and a solution box, wherein the relative positions of the tensioning base and the anchoring base are fixed, and the solution box is arranged between the tensioning base and the anchoring base; the solution box is configured to contain a corrosion solution and penetrate through a plurality of high-strength steel wires soaked in the corrosion solution, the anchoring base is connected with one ends of the high-strength steel wires in an anchoring mode, and the other ends of the high-strength steel wires are fixedly connected to the tensioning steel plate. And the tensioning steel plate is screwed on the tensioning base through at least one high-strength bolt along the stretching direction of the high-strength steel wire in an elastic manner. The high-strength steel wire stress corrosion test device disclosed by the utility model can realize anchoring fixation, simple disassembly and assembly and steel wire tension data acquisition, and is simple and ingenious in structure and simple and feasible to operate.

The application discloses a steady-state unwinding device, process and application of high-rigidity high-frangibility high-torque wire, and belongs to the field of textile processing technology.The device realizes controlled rotation of the yarn cylinder and steady-state circumferential unwinding of the wire by clamping and positioning the upper and lower ends of the yarn cylinder and combining up-down, left-right and front-back adjustable structures and damping control, thereby effectively inhibiting the problems of knotting, small braids and tension fluctuation of high-rigidity high-frangibility high-torque wire caused by residual torque in the unwinding process.The steady-state unwinding process can output the wire in a uniform and continuous state, is suitable for textile processing of inorganic non-metallic high-torque fiber, high-modulus high-torque organic fiber and high-twist high-twist yarn, and can stably feed into processes such as plying, doubling, heat setting and weaving, thereby ensuring the consistency of wire tension and the stability of product performance in the subsequent processing process.

The utility model relates to the technical field of drawing reducing diameter device, especially to a kind of crude product welding wire welding wire drawing reducing diameter device, its improve the convenience of control adjustment to welding wire tension size, improve the flexibility of welding wire drawing force adjustment;Including base and recess, recess is set on the outside wall of base;Still include resistance device, conveying device, adjusting device, spool, fixed base, first tension wheel and second tension wheel, the both ends of spool are embedded in recess inside, resistance device is provided on base, resistance device is used to provide resistance for the rotation of spool, fixed base is set on the outside wall of base, a plurality of first tension wheels are rotatably installed on fixed base, a plurality of second tension wheels are rotatably set on fixed base by adjusting device moving up and down, conveying device is set on fixed base, and conveying device is used to draw and convey welding wire.

The invention relates to the technical field of installation and construction of power distribution facilities, in particular to an automatic wire pulling method and traction device for a high-voltage bushing of a transformer. The method comprises the following construction steps: S1, testing a field environment which comprises a weather condition and a ground installation condition; s2, mounting a traction device, including designing a traction device mounting position and power connection; s3, controlling traction installation, including starting lead traction and detecting a traction state; and S4, detecting the mounting effect, including a connection stability test and a connection tension test. By means of automatic traction, the friction damage risk in manual operation is reduced, potential safety hazards caused by lead damage are reduced, through real-time monitoring and control, wire tension and connection stability are ensured, the long-term reliability of the transformer is improved, real-time monitoring is conducted through a sensor and a detection device, efficient and safe traction operation is achieved, and the production efficiency is improved. Real-time feedback is provided for the installation process, and possible abnormal conditions are found and processed in time.

The invention provides a method for improving the production efficiency of a high-efficiency spring steel wire, and relates to the technical field of spring steel wire production.The method comprises the following steps that multi-source physical quantities in the spring steel wire winding process are collected in real time, and the multi-source physical quantities comprise steel wire tension distribution, the bending rod curvature radius, a roller temperature field and an equipment vibration frequency spectrum; based on the obtained multi-source physical quantity, a torque instruction, a rotating speed instruction and a bending radius compensation amount are generated through a dynamic collaborative mapping function; according to the generated instruction, a servo motor set is driven to adjust the wire feeding speed and the angular speed of a roller, and meanwhile a piezoelectric trimmer is controlled to correct the bending radius; and adopting a reinforcement learning strategy to optimize control parameters on line, and dynamically updating a mapping function according to winding quality feedback. According to the method, the problem that the remodeling debugging time is long can be effectively solved, the wire breakage rate can be remarkably reduced, and the size consistency can be effectively improved.

The present invention discloses a wire winding and unwinding device for a transformer coil, comprising: a base assembly, a wire winding and unwinding assembly, a wire tension adjusting assembly, and a control assembly; the wire winding and unwinding assembly is arranged on the base assembly, the wire tension adjusting assembly is connected to the wire winding and unwinding assembly, and adjusts the tension of the wire through the wire winding and unwinding assembly; the control assembly is electrically connected to the wire winding and unwinding assembly and the wire tension adjusting assembly respectively, and controls the wire winding and unwinding assembly to wind and unwind the wire. By controlling the tension during wire unwinding through the wire tension adjusting assembly, the defect in the prior art of only adjusting the wire tension by the tightness of the brake lining is overcome, the tension of the wire is kept stable, the quantitative adjustment of the wire tension is realized, and the stability of the wire winding and unwinding device is improved.

The application discloses a wire cutting machine tool wire guide device and belongs to the technical field of processing equipment. The wire cutting machine tool wire guide device comprises a main beam and a tension adjusting mechanism, a wire diameter detecting mechanism, a guide mechanism and a collecting mechanism. The main beam is provided with the tension adjusting mechanism for adjusting the wire tension in real time. One side of the main beam is provided with the wire diameter detecting mechanism for detecting the wire diameter in multiple directions. One side of the main beam is provided with the guide mechanism for guiding the wire. One side of the wire diameter detecting mechanism and the guide mechanism is provided with the collecting mechanism for collecting impurities on the wire. The guide mechanism comprises a guide wire feeding assembly and an anti-interference assembly. The main beam is provided with the guide wire feeding assembly for guiding the wire feeding. In the above manner, the application can improve the accuracy of wire detection after wire feeding and the accuracy of wire diameter detection, can clean the wire surface in real time and prolong the service life of the wire.

The utility model relates to the technical field of wires, and discloses a fastener wire tension adjusting device which comprises a supporting frame, the front side of the supporting frame is connected with a plurality of sets of first supporting plates, the opposite sides of the two sets of first supporting plates are connected with screws, the front side of the supporting frame is connected with a rotating rod, the front side of the rotating rod is connected with a first gear, and the front side of the first gear is connected with a second gear. A second gear is connected to the side, close to the first gear, of the screw rod, the first gear is meshed with the second gear, a screw block is connected to the outer side of the screw rod, a tension device is connected to the front side of the screw block, and a limiting device is connected to the rear side of the rotating rod and the rear side of the supporting frame. According to the scheme, the supporting frame, the first supporting plate, the rotating rod, the screw rod, the first gear, the second gear and the screw block are arranged and matched, so that the screw block can be close to or away from the rotating rod, a wire placed on the outer side of the tension device is expanded, and the use stability of the fastener wire is improved.

The invention relates to the technical field of sewing machines, in particular to a multi-thread-trapper thread tension adjusting device which is characterized in that a driving motor drives a rotating shaft to rotate; the plurality of adjusting mechanisms are arranged in one-to-one correspondence with the adjusting nuts of the plurality of wire trappers; the adjusting mechanism comprises a friction wheel arranged opposite to the adjusting nut, a transmission piece connected with the rotating shaft and the friction wheel so as to drive the friction wheel to rotate, and a clutch piece connected with the friction wheel and driving the friction wheel and the adjusting nut to be pressed or not pressed. The invention further relates to a multi-yarn-trapper yarn tension adjusting method which adopts the device and comprises automatic adjustment and manual adjustment. The automatic adjustment is that the adjusting nuts of all the wire trappers or one or more of the wire trappers are compressed with the friction wheel, the driving motor drives the friction wheel to rotate through the rotating shaft and the transmission piece, and the friction wheel compressed with the adjusting nuts drives the adjusting nuts to rotate; the manual adjustment is that the adjusting nut of the wire clamp and the friction wheel are not tightly pressed, and the adjusting nut is manually rotated. Automatic synchronous or independent adjustment of the tension of the multi-thread-trapper thread can be achieved.

A take-up tension adjusting device for a heating wire comprises a supporting table, a bearing seat is mounted on the supporting table, a rotating shaft is connected to the middle of the bearing seat, and a take-up wheel is mounted at the front end of the rotating shaft; a friction wheel, a friction pad, a transmission pressing wheel, a spring, a pressing pad and an adjusting nut are sequentially installed at the rear end of the rotating shaft. The transmission pressing wheel is in transmission connection with a driving shaft of the driving motor through a first transmission belt; a workbench is arranged on the side face of the supporting table, lead screw bearing seats are installed on the workbench, a lead screw is rotationally connected between the lead screw bearing seats, the surface of the lead screw is in threaded connection with a lead screw sliding block, a supporting column is fixedly installed above the lead screw sliding block, a guide wheel is rotationally installed above the supporting column, and the guide wheel corresponds to the take-up wheel left and right. The rear end of the lead screw penetrates through the lead screw bearing seat and is in transmission connection with the driving mechanism so as to drive the lead screw to rotate. According to the utility model, the defects in the prior art are overcome, the tension can be effectively adjusted and controlled in the take-up process of the heating wire, and the take-up quality of the heating wire is ensured.

The invention discloses a calculation method for a running overhead line state. The calculation method comprises the following steps: acquiring measurement data and line parameters in real time; the measurement data comprises environment temperature, wind speed and direction, wire tension, sunlight intensity and load current, and the line parameters comprise strain section parameters and wire parameters; solving the conductor sag by using the wind speed and direction, the conductor tension, the strain section parameter and the conductor parameter; based on a proportional fusion correction mechanism, solving the average temperature of the line by using the conductor sag; solving the maximum heat capacity of the line by using the environment temperature, the sunlight intensity, the load current and the average temperature of the line; and adjusting the running current on the overhead line in real time according to the maximum thermal capacity of the line. On the basis of the method, the measurement data and the line parameters under the actual operation condition are utilized to replace the calculation of presetting the maximum allowable current-carrying capacity under the worst condition, so that the utilization rate of the invisible capacity is improved, the transmission efficiency of the overhead line is further improved, and the economical efficiency and the transportation capacity of the overhead line are improved.

The invention provides transformer coil winding equipment which comprises a pay-off mechanism, the pay-off mechanism comprises a fixing assembly and a guiding assembly, the guiding assembly is connected with the side face of the fixing assembly, the fixing assembly comprises a wire roller supporting module and a fixing module, a tension adjusting module is arranged on the fixing module, and the wire roller supporting module is in transmission connection with the tension adjusting module; the guide assembly comprises a pressure sensor and a plurality of guide wheels, the pressure sensor is arranged among the plurality of guide wheels, the pressure sensor is connected with the tension adjusting module, and the rotating speed of the pay-off roller is adjusted according to the tension of the wire detected by the pressure sensor in real time. The pressure sensors are installed among the multiple guide wheels so that the tension state of the wire can be monitored in real time, and it is ensured that the tension of the wire in the winding process is kept within a limited range.